I understand the sentiment behind this (my son just missed his HS senior baseball season), but yeah, this bill seems misguided. Do NJ community colleges not offer sports (even club or intramural)?
My guess is not very many people will try this. But for those who do, it's hard to see the equity in letting them return for HS sports by taking a roster spot from a younger player. And creating that situation for the next three seasons is especially over the top.
People lose seasons (and athletic careers) every year due to injury. My oldest went through three orthopedic surgeries, so I have watched someone I care about forced off the field repeatedly and then permanently. In 2020, everyone lost the chance to play spring sports--it's a shame, but trying to fix the problem just creates inequities that extend into future years.